Buffing or polishing machine



Oct. 12, 1937. c. o. JOHNSON BUFF'ING OR POLISHING MACHINE Filed May 27,1936 5 Sheets-Sheet 1 Inventor Attorneys Oct. 12, 1937. c. o. JOHNSONBUFFING OR POLISHING MACHINE 5 Sheets-Sheet 2 Filed May 27, 1956Inventor C. 0, 705218024 fi uwm A iiomeys c. o. JOHNSON BUFFING ORPOLISHING MACHINE Oct. 12, 1937.

5 Sheets-Sheet 5 Filed May 2'7, 19136 Inventor By fimagiih A itorneys-Oct. 12, 1937. c, Q JOHNSON 2,095,501

BUFFING OR POLISHING MACHINE Filed May 27, 1936 5 Sheets-Sheet 4Invenlor A Home};

5 Sheets-Sheet 5 l. J F M L 12 2 2, 1. I U v I r I y B Oct. 12, 1937. c.o. JOHNSON BUFFING OR POLI SHING MACHINE Filed May 27, 1936 In van [orPatented Oct. 12, 1937 UNITED STATES PATENT OFFICE 2,095,501 BUFFING ORPOLISHING MACHINE Carl 0. Johnson, Springville, N. Y., assignor to RalphB. Waite, Springville, N. Y.

Application May 27, 1936, Serial No. 82,103

Claims. (01. 51--84) advantages will be best understood from a study ofthe following description taken in connection with the accompanyingdrawings wherein:- Figure 1 is a front elevational view of the machinewith certainparts removed. I

Figure 2 is a transverse sectional view taken substantially on the line22 ofFigure 1.

Figure 3 isa, detail plan view of the work holder. 7

Figure 4 is a front elevational view of the work holder.

Figure 5 is a transverse sectional view taken' substantially on the line55 of Figure 3. 9 Figure-6 is a fragmentary plan view showing a valveactuating mechanism and associated parts and Figure 7 is a View partlyin section andpartly in elevation showing the valve and actuating meanstherefor. Referringfto the drawings by referenoe numerals, the machinecomprises generally a table I supported by legs or standards 2.- Risingfrom the table I are upright bearing 30 members 3 and said bearingmembers 3 support therebetween a rocker shaft 4 to which are splined orotherwise secured arms 5 and 6. Sup

ported by the arms 5 and 6 is a polishing roll I, the shaft of which isjournaled in the free ends 35 of the arms 5 and 6.

Arm 6 is extended, as best shown in Figure 1, to form a bracket to whichan electric motor 8 is secured; the" shaft of the motor forming anextension of, or being directly connected to; the shaft 9 of the roll I.

Similarly the shaft I0 of asecond and lower roll I I' is journaled inthefree ends of arms I2 and I3 splined or otherwise" secured to a rockershaft I4 mounted. below shaft 4 in the bearing members 3. Arm I2'isextended to form a bracket'to which an electric motor I5 is secured, theshaft of" motor I5 forming an ext'ension of, or being'directly connectedto, shaft I0 of roll II. Thus each roll "I and H is independently driven30 byits motor and directly from its motor.

Shafts 4 and I4 are adapted tobe simultaneously 'rockedfin oppositedirections by means of a tur rr buckle I6, theopp'dSitely threadedportions of which engage in nuts I'TBlld' I8 piv'oted 55respectivelyin-the free" ends of arms I9and which are splinedrespectively to shafts 4 and I4. As shown in Figure 2 shafts 4 and I4are geared together as by segmental gears 2I and 22 respectively securedto saidshafts so that rotation of turn buckle I6 will result insimultaneously rocking the shafts 4 and I4 in equal amounts but inopposite directions, thus swinging the rolls 2 and 3 toward or from eachother to adjust their spacing for work of different thick ness.

Secured transversely to the top I are fixed guides 23 formed'on one sidewith ribs that are received in ways 24 provided at respective oppositeend edges of a slide 25. Slide 25 is thus mounted on the top I forreciprocationtransversely with respect to the axis of the rollers I andII and for reciprocating the slide 25 there is suitably mounted beneaththe top I a cylinder 26 in which operates a piston the rod 21 of whichis suitably secured to a bracket 28 depending from one end of the slide25 as best shown in Figures 1 and 2.

For reciprocating the piston within the cylinder 26 there is suitablymounted on the extended part 29 of arm I2 which forms the bracket'forthe motor I5 a liquid pump 30 which is driven from'the' motor I5 throughthe medium of a belt and drive means 3I. Pump 30 serves to draw liquidfrom a liquid chamber 32 provided in one of the stands 2 through a pipe33 that leads from the chamber 32 to the intake side of the pump.Fromtheoutletside of the pump there extends piping 34 which is connectedwith one side of the casing of a valve assembly 36. Valve assembly 36has one side thereof connected through the medium of piping 37 with oneend of piston 26 While the other side of the casing ,of valve 36 isconnected in a similarmanner with the relatively opposite end of thecylinder 26 so that liquid under pressure will first be supplied to oneend of cylinder 26 for moving the piston therein in one direction, andthen into the cylinder 26 at the opposite end thereof for moving thepiston in a reverse direction for reciprocating the slide 25. Forbleeding the ends 7 of the cylinder in alternation and for directing theliquid exhausting from the ends of the cylinders back to the chamber 34there is provided a return pipe connection 38 between the valve 36 andthe chamber 32. 7

Also for bypassing the liquid from the pump back to the chamber 32before the liquid reaches the valve 36 there is provided a suitableby-path pipe connection 39 between pipe 34 and chamber 32 equipped witha valve 40.

For operating the valve 31 in a manner to control the operation of thepiston within the cylinder 36 for reciprocating the slide 25 the crank4| of the stem of valve 31 has a pin and slot connection 42 with a lever43 which is pivoted at one end as at 44.

Suitably mounted on one side of the slide 25 are bearings 45 in which isjournaled the respective opposite ends of a shaft 46 that at one end isequipped with a hand wheel 41 and threads 48 cooperable with a fixed nut49 on an adjacent bracket 45 so that as the hand wheel 41 is rotated ina proper direction the shaft 46 may be fed for passing the free endthereof into the other of the bearings 45 or said shaft may be retractedfor Withdrawing the shaft axially through the bearings 45.

Shaft or rod 46 is provided with two series of relatively spacedopenings 5| through the medium of which and pins 52 top blocks 58 aresecured at the desired relative adjustment on the rod 46. The blocks .58are arranged so as to engage the lever 43 in alternation incidental to areciprocation of the slide 25 to thereby operate the valve 31 in amanner to control the supply of liquid under pressure to cylinder 26 forreciprocating the piston in said cylinder.

For normally holding the valve 31 in a neutral position there isprovided a spring 53 which at one end is secured at the connection 42between the valve crank 4| and lever 43 and which at its opposite end isprovided to engage in a selected notch of a series of notches providedin the upstanding fiange of a plate 54 suitably secured to the top ofthe slide 25. (See Figures 6 and 7.)

On the top thereof the slide 25 is provided with apertured lugs 55arranged in pairs and having a sliding fit within the apertures of eachpair of lugs 55 is a rod 56. Rods 56 extend transversely to the line ofmovement of the slide 25. and secured to the respective opposite ends ofthe respective rods 56 are lugs 51 provided on the underside of a slide58 which reciprocates relative to the slide 25 and in a path parallel tothe rollers 1 and II or at right angles to the path of travel of theslide 25. V

For reciprocating the slide 58 there is provided on the table I andextending from one edge thereof a bracket 59 to which is secured anelectric motor 68. Suitably connected with the shaft of the motor 68through the medium of reduction gearing arranged within a gear case 6|mounted on one side of the casing of the motor 68 is an eccentric 62 towhich is connected one end of a pitman rod 63 that in turn is pivotallyconnected as at 64 with a bracket arm 65 that is secured to one of thelugs 51 as shown in Figure 1.

Secured to and rising from the slide 58 are standards 66 to the upperedges of which are pivoted as at 61, and as shown in Figure 4, channelmembers 68. For securing the members 68 at the desired angularadjustment relative to the upper edges of the standards 66 are adjustingscrews 69.

Bolted or otherwise secured as at 18 to the members 60 are plates 1| onwhich rest the respective oppositeends of a work holding bar 12 disposedthere-between, and the bar 12 is supported for sliding movementlaterally toward or away from the rolls 1 and II.

For guiding the bar" as it is adjusted relative to the rolls there areprovided guide arms 13 that extend froma member 14 that is disposedbetween and connects the free ends of the members 68. At one edgethereof the work holding bar 12 is provided with a depending skirt 14provided with slots to accommodate the guide arms 13. Also extendingfrom the skirt 14 are handle extensions 15 which are used tofacilitatethe sliding of the work holding plates 12 toward or away from the rolls.

To maintain the respective opposite end edges of the bar 12 in slidingcontact with the plates 1| there are secured by bolts or the like 11spring clips 18 that have portions overlying the plates 1| and theadjacent ends of the work holding plate 12 as clearly shown in Figures 3and 4 and also in Figure 5.

Adjacent the free edge thereof the work holding plate 12 has a pluralityof pins 19 projecting upwardly therefrom to engage in the usual rivetopenings provided in the handle ends of knife blades 88.

For retaining said ends of the blades 88 engaged with the pins 19 thereis provided an apertured clamping bar 8| the apertures of whichaccommodate the upper ends of the pins 19. For retaining the bar 8| inclamping position relative to the plate 12 to confine the handle ends ofthe knives 88 on the pins 19 there are provided a pair of spring fingers82 which have ends yieldably urged into engagement with the bar 8|through the medium of screws 83 and springs 84 disposed about the screwsbetween the clamping fingers 82 and the plate 12.

Also the clamping fingers 82 have portions resting on angular brackets84 suitably mounted on the flange 16 of plate 12 and which brackets haveupstanding ends upon which intermediate portions of the clamping fingers82 rest so that by screwing home the screws 83 said fingers 82 will beplaced under tension for securely retaining the clamping plate 8| inposition.

From the above it will be seen that by adjusting the members 68angularly with respect to the upper edges of the standards 66 the blades88 may be properly positioned in the bight or space between the rotatingrolls 1 and II to insure proper contact of the rolls with the knifeblades to insure thorough polishing of the blades on both sides thereof.It will also be seen in this connection that by properly adjusting theangular position of the members 68 the blades may be so positioned as tocontact with but one roll to polish or bufi a single surface of eachknife blade.

As is thought apparent from the foregoing, the knife blades or otherwork carried by the work support will be reciprocated in the bite of therotating rolls 1 and H by the reciprocation of slide 25, and thatsimultaneous reciprocation parallel to the rolls is imparted to the workby slide 58.

It is thought that a clear understanding of the invention, its operationand utility will be apparent to those skilled in the art without a moredetailed description.

Having thus described the invention what is claimed as new is:--

1. In a buifing and polishing machine, a table, a pair of rolls mountedon the table, means connected to the shaft of each roll to drive itindependently of the other, means connected with the rolls for adjustingtheir spacing to various thicknesses of work, a slide mounted on thetable for reciprocation transversely to the axis of the rolls, a secondslide mounted on the first slide for reciprocation parallel to the axisof the rolls, a work support carriedby the second slide, hydraulic meansconnected with the first slide for reciprocatingit, an electric motormounted on the table, and an operating connection between said motor andthe second slide for reciprocating the latter.

2. A bufiing and polishing machine comprising a table, a pair of rollsmounted on the table, means connected to the shaft of each roll fordriving it independently of the other, means connected with the rollsfor adjusting the same toward or away from each other for adjustingtheir spacing to various thicknesses of work, a slide mounted on thetable for reciprocation transverse to the axis of the rolls, hydraulicmeans connected with said slide for reciprocating it, a second slidemounted on the first slide for reciprocation parallel to the axes of therolls, a motor mounted on the table, means operatively connecting themotor with the second slide for reciprocating it, and a work supportmounted on the second slide including a pair of standards rising fromthe second slide, members pivoted to the upper ends or" the standards,means engaged with said members and the standards for securing saidmembers at the desired angular adjustment relative to the upper edges ofsaid standards, a work holding plate supported between said membersfor'sliding movement thereon toward and away from the rolls, resilientspring devices on said members and yieldably engaging the work holdingplate for securing the latter at the desired adjustment, and means onthe work holding plate for clamping the work thereto whereby the workmay be held in the space between the rolls for contact with both rollsor in contact with a selected one of the rolls, optionally.

3. A buffing and polishing machine comprising a pair of buffing andpolishing rolls, means connected with the rolls for driving them, a worksupport, a slide connected with the work support and mounted forreciprocation parallel to the axes of the rolls, a second slide beneaththe first slide and mounted for reciprocation transversely to the axesof the rolls, and hydraulic means for reciprocating the last named slideincluding a cylinder, a piston mounted for reciprocation in the cylinderand having a rod connected with the last named slide for transmittingmovement of the piston to the slide, means for controlling the supply ofliquid to the respective opposite ends of the cylinder including avalve, and means connected with the valve and the last named slide foroperating the valve in response to the reciprocating movement of thelast named slide.

4. A bufling and polishing machine comprising a pair of buifing andpolishing rolls, means connected with the rolls for driving them, a worksupport, a slide connected with the work support and mounted forreciprocation parallel to the axes of the rolls, a second slide beneaththe first slide and mounted for reciprocation transversely to the axesof the rolls, and hydraulic means for reciprocating the last named slideincluding a cylinder, a piston mounted for reciprocationin the cylinderand having a rod connected with the last named slide for transmittingmovement of the piston to the slide, means for controlling the supply ofliquid to the respective opposite ends of the cylinder including avalve, and means connected with the valve and the last named slide foroperating the valve in response-to the reciprocating movement of thelast named slide, a prime mover, and means operatively connecting theprime mover with the first named slide for reciprocating the latter.

5. A bufiing and polishing machine comprising a pair of buffing andpolishing rolls, means to drive said rolls, a slide mounted forreciprocation transversely to the axes of the rolls, a second slidemounted on thefirst slideforreciprocation parallel to the axes of therolls, a work support carried by the second slide, and means forreciprocating the slides simultaneously including hydraulic meansconnected with the first slide and characterized by a control valvearranged adjacent to the first slide and means on said valve and on thefirst slide for actuating the valve as the slide approaches the limit ofits movement in either direction.

CARL O. JOHNSON.

